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https://www.readbyqxmd.com/read/28714599/the-utility-of-empirically-assigning-ancestry-groups-in-cross-population-genetic-studies-of-addiction
#1
Roseann E Peterson, Alexis C Edwards, Silviu-Alin Bacanu, Danielle M Dick, Kenneth S Kendler, Bradley T Webb
BACKGROUND AND OBJECTIVES: Given moderate heritability and significant heterogeneity among addiction phenotypes, successful genome-wide association studies (GWAS) are expected to need very large samples. As sample sizes grow, so can genetic diversity leading to challenges in analyzing these data. Methods for empirically assigning individuals to genetically informed ancestry groups are needed. METHODS: We describe a strategy for empirically assigning ancestry groups in ethnically diverse GWAS data including extensions of principal component analysis (PCA) and population matching through minimum Mahalanobis distance...
July 17, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28691841/shared-familial-risk-between-bulimic-symptoms-and-alcohol-involvement-during-adolescence
#2
Jessica H Baker, Melissa A Munn-Chernoff, Paul Lichtenstein, Henrik Larsson, Hermine Maes, Kenneth S Kendler
Twin studies show the established relation between bulimic symptoms and problematic alcohol involvement in adult females is partly due to shared familial factors, specifically shared genetic effects. However, it is unclear if similar shared etiological factors exist during adolescence or in males. We examined the familial overlap (i.e., genetic and common environmental correlations) between bulimic symptoms and various levels of alcohol involvement in 16- to 17-year-old female and male same-sex twin pairs using sex-specific biometrical twin modeling...
July 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28666429/common-adult-psychiatric-disorders-in-swedish-primary-care-where-most-mental-health-patients-are-treated
#3
Jan Sundquist, Henrik Ohlsson, Kristina Sundquist, Kenneth S Kendler
BACKGROUND: The overall aim of this study is to present descriptive data regarding the treated prevalence of nine common psychiatric and substance use disorders in the first Primary Care Registry (PCR) in Sweden: Major Depression (MD), Anxiety Disorders (AD), Obsessive-Compulsive Disorder (OCD), Adjustment Disorder (AdjD), Eating Disorders (ED), Personality Disorder (PD), Attention Deficit Hyperactivity Disorder (ADHD), Alcohol Use Disorder (AUD) and Drug Abuse (DA). METHOD: We selected 5,397,675 individuals aged ≥18...
June 30, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28595490/the-protective-effect-of-pregnancy-on-risk-for-drug-abuse-a-population-co-relative-co-spouse-and-within-individual-analysis
#4
Kenneth S Kendler, Henrik Ohlsson, Dace S Svikis, Kristina Sundquist, Jan Sundquist
OBJECTIVE: The authors sought to determine whether pregnancy is an intrinsic motivator for cessation of drug abuse. METHOD: The authors conducted prospective cohort, co-relative, co-spouse, and within-person analyses of registration for drug abuse during pregnancy among Swedish women born between 1980 and 1990 who gave birth between ages 20 and 35 (N=149,512). Drug abuse was assessed from medical, criminal, and pharmacy registries. RESULTS: In the population, rates of drug abuse were lower during pregnancy (unadjusted odds ratio=0...
June 9, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28586358/parental-alcohol-use-and-risk-of-behavioral-and-emotional-problems-in-offspring
#5
Liam Mahedy, Gemma Hammerton, Alison Teyhan, Alexis C Edwards, Kenneth S Kendler, Simon C Moore, Matthew Hickman, John Macleod, Jon Heron
OBJECTIVE: The majority of studies that have examined parental alcohol use and offspring outcomes have either focused on exposure in the antenatal period or from clinical populations. This study sought to examine proximal and distal associations between parental alcohol use and offspring conduct problems and depressive symptoms in a population birth cohort. METHODS: We used prospective data from a large UK based population cohort (ALSPAC) to investigate the association between parental alcohol use, measured in units, (assessed at ages 4 and 12 years) with childhood conduct trajectories, (assessed on six occasions from 4 to 13...
2017: PloS One
https://www.readbyqxmd.com/read/28578747/the-decomposition-of-shared-environmental-influences-on-externalizing-syndromes-in-the-swedish-population-a-multivariate-study
#6
Henrik Ohlsson, Kenneth S Kendler, Paul Lichtenstein, Jan Sundquist, Kristina Sundquist
Using information from Swedish population registries, we attempt to decompose the shared environment (C) into four subcomponents: close family, family, household, and community. Among pairs differing in their genetic and geographical/household relationships, we examine three externalizing syndromes: drug abuse (DA), criminal behavior (CB), and alcohol use disorders (AUD). The best-fitting common pathway model suggested that total estimates for C were higher for DA (21% for males and 18% for females) than for AUD (16% and 14%) and CB (17% and 10%)...
June 5, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28550519/drug-abuse-associated-mortality-across-the-lifespan-a-population-based-longitudinal-cohort-and-co-relative-analysis
#7
Kenneth S Kendler, Henrik Ohlsson, Kristina Sundquist, Jan Sundquist
PURPOSE: Nationwide data have been lacking on drug abuse (DA)-associated mortality. We do not know the degree to which this excess mortality results from the characteristics of drug-abusing individuals or from the effects of DA itself. METHOD: DA was assessed from medical, criminal, and prescribed drug registries. Relative pairs discordant for DA were obtained from the Multi-Generation and Twin Registers. Mortality was obtained from the Swedish Mortality registry...
July 2017: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/28541064/stability-and-change-in-etiological-factors-for-alcohol-use-disorder-and-major-depression
#8
Fartein Ask Torvik, Tom Henrik Rosenström, Eivind Ystrom, Kristian Tambs, Espen Røysamb, Nikolai Czajkowski, Nathan Gillespie, Gun Peggy Knudsen, Kenneth S Kendler, Ted Reichborn-Kjennerud
Alcohol use disorder (AUD) and major depressive disorder (MDD) are often comorbid. It is not understood how genetic risk factors for these disorders relate to each other over time and to what degree they are stable. Age-dependent characteristics of the disorders indicate that different genetic factors could be relevant at different stages of life, and MDD may become increasingly correlated with AUD over time. DSM-IV diagnoses of AUD and MDD were assessed by interviews of 2,801 young adult twins between 1999 and 2004 (T1) and 2,284 of the same twins between 2010 and 2011 (T2)...
May 25, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28522083/relationships-between-potentially-traumatic-events-sleep-disturbances-and-symptoms-of-ptsd-and-alcohol-use-disorder-in-a-young-adult-sample
#9
Mackenzie J Lind, Allison Baylor, Cassie M Overstreet, Sage E Hawn, Bruce D Rybarczyk, Kenneth S Kendler, Danielle M Dick, Ananda B Amstadter
OBJECTIVE: Traumatic events, particularly those that are interpersonal in nature, are associated with increased risk for co-occurring sequelae, including sleep disturbances, posttraumatic stress disorder (PTSD), and alcohol use disorder (AUD). However, the associations between these phenotypes have not been explored among college students. METHODS: We examined relationships between type of potentially traumatic event (PTE) exposure (pre-college) and sleep disturbances, as well as mediating effects of lifetime PTSD and AUD symptoms on these relationships, in a large undergraduate sample (N = 1599, 64...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28499112/polygenic-risk-personality-dimensions-and-adolescent-alcohol-use-problems-a-longitudinal-study
#10
James J Li, Jeanne E Savage, Kenneth S Kendler, Matthew Hickman, Liam Mahedy, John Macleod, Jaakko Kaprio, Richard J Rose, Danielle M Dick
OBJECTIVE: Alcohol use problems are common during adolescence and can predict serious negative outcomes in adulthood, including substance dependence and psychopathology. The current study examines the notion that alcohol use problems are driven by polygenic influences and that genetic influences may indirectly affect alcohol use problems through multiple pathways of risk, including variations in personality. METHOD: We used a genome-wide approach to examine associations between genetic risk for alcohol use problems, personality dimensions, and adolescent alcohol use problems in two separate longitudinal population-based samples, the Finnish Twin Cohort (FinnTwin12) and the Avon Longitudinal Study of Parents and Children (ALSPAC)...
May 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28488144/does-parenting-influence-the-enduring-impact-of-severe-childhood-sexual-abuse-on-psychiatric-resilience-in-adulthood
#11
Mackenzie J Lind, Ruth C Brown, Christina M Sheerin, Timothy P York, John M Myers, Kenneth S Kendler, Ananda B Amstadter
This study examined the effect of parenting on the association between childhood sexual abuse (CSA) and psychiatric resilience in adulthood in a large female twin sample (n = 1423) assessed for severe CSA (i.e., attempted or completed intercourse before age 16). Severe CSA was associated with lower resilience to recent stressors in adulthood (defined as the difference between their internalizing symptoms and their predicted level of symptoms based on cumulative exposure to stressful life events). Subscales of the Parental Bonding Instrument were significantly associated with resilience...
May 9, 2017: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/28482691/the-philosophy-of-nosology
#12
Peter Zachar, Kenneth S Kendler
Many scholars believe that psychiatric nosology is undergoing a crisis of confidence. Some of the issues up for debate hark back to the introduction of the natural history approach to classification in the seventeenth century. Natural histories map sameness and difference rather than speculate about causes. In contrast, the natural classification approach aspires to carve nature at the joints by demarcating classifications by causes. Natural classifications are more ideal scientifically, but speculation about causality has had a poor track record in psychiatric nosology...
May 8, 2017: Annual Review of Clinical Psychology
https://www.readbyqxmd.com/read/28471244/aldh2-2-and-peer-drinking-in-east-asian-college-students
#13
Taryn O'Shea, Nathaniel Thomas, Bradley Todd Webb, Danielle M Dick, Kenneth S Kendler, Karen G Chartier
BACKGROUND: The ALDH2*2 allele (A-allele) at rs671 is more commonly carried by Asians and is associated with alcohol-related flushing, a strong adverse reaction to alcohol that is protective against drinking. Social factors, such as having friends who binge drink, also contribute to drinking in Asian youth. OBJECTIVES: This study examined the interplay between ALDH2*2, peer drinking, and alcohol consumption in college students. We hypothesized that the relationship between ALDH2*2 and standard grams of ethanol per month would vary based on the level of peer drinking...
May 4, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28467524/causal-inference-in-psychiatric-epidemiology
#14
Kenneth S Kendler
No abstract text is available yet for this article.
May 3, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28449133/maternal-alcohol-use-during-pregnancy-and-offspring-attention-deficit-hyperactivity-disorder-adhd-a-prospective-sibling-control-study
#15
Espen Moen Eilertsen, Line C Gjerde, Ted Reichborn-Kjennerud, Ragnhild E Ørstavik, Gun Peggy Knudsen, Camilla Stoltenberg, Nikolai Czajkowski, Espen Røysamb, Kenneth S Kendler, Eivind Ystrom
Background: Maternal alcohol use during pregnancy has repeatedly been associated with development of attention-deficit hyperactivity disorder (ADHD) in the offspring. It is, however not known whether this reflects a direct casual intra-uterine effect or a non-causal relationship due to confounding. We used three different approaches to control for measured and unmeasured confounding: statistical adjustment for covariates, negative control comparison against maternal pre-pregnancy alcohol use, and comparison among differentially exposed siblings...
April 24, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28406579/disparities-in-pharmacotherapy-for-alcohol-use-disorder-in-the-context-of-universal-health-care-a-swedish-register-study
#16
Katherine J Karriker-Jaffe, Jianguang Ji, Jan Sundquist, Kenneth S Kendler, Kristina Sundquist
BACKGROUND AND AIMS: Pharmacotherapy can be an important part of the continuum of care for alcohol use disorder (AUD). The Swedish universal health-care system emphasizes provision of care to marginalized groups. The primary aim was to test associations of neighborhood deprivation and disadvantaged social status with receipt of AUD pharmacotherapy in this context. DESIGN: Data from linked population registers were used to follow an open cohort over 7 years. SETTING: Sweden...
August 2017: Addiction
https://www.readbyqxmd.com/read/28360924/molecular-genetic-influences-on-normative-and-problematic-alcohol-use-in-a-population-based-sample-of-college-students
#17
Bradley T Webb, Alexis C Edwards, Aaron R Wolen, Jessica E Salvatore, Fazil Aliev, Brien P Riley, Cuie Sun, Vernell S Williamson, James N Kitchens, Kimberly Pedersen, Amy Adkins, Megan E Cooke, Jeanne E Savage, Zoe Neale, Seung B Cho, Danielle M Dick, Kenneth S Kendler
Background: Genetic factors impact alcohol use behaviors and these factors may become increasingly evident during emerging adulthood. Examination of the effects of individual variants as well as aggregate genetic variation can clarify mechanisms underlying risk. Methods: We conducted genome-wide association studies (GWAS) in an ethnically diverse sample of college students for three quantitative outcomes including typical monthly alcohol consumption, alcohol problems, and maximum number of drinks in 24 h. Heritability based on common genetic variants (h(2)SNP) was assessed...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28319814/time-specific-and-cumulative-effects-of-exposure-to-parental-externalizing-behavior-on-risk-for-young-adult-alcohol-use-disorder
#18
Alexis C Edwards, Sara L Lönn, Katherine J Karriker-Jaffe, Jan Sundquist, Kenneth S Kendler, Kristina Sundquist
BACKGROUND: Previous studies indicate that parental externalizing behavior (EB) is a robust risk factor for alcohol use disorder (AUD) in their children, and that this is due to both inherited genetic liability and environmental exposure. However, it remains unclear whether the effects of exposure to parental EB vary as a function of timing and/or chronicity. METHODS: We identified biological parents with an alcohol use disorder, drug abuse, or criminal behavior, during different periods of their child's upbringing, using Swedish national registries...
September 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28317498/school-achievement-iq-and-risk-of-alcohol-use-disorder-a-prospective-co-relative-analysis-in-a-swedish-national-cohort
#19
Kenneth S Kendler, Henrik Ohlsson, Jan Sundquist, Kristina Sundquist
OBJECTIVE: Most studies suggest that poor cognitive functioning in adolescence increases risk of alcohol use disorders (AUDs). We seek to clarify the causes of this association. METHOD: In Swedish individuals born from 1972 to 1990 in whom cognitive functioning was assessed by school achievement at age 16 years (males and females, N = 1,796,048) and by IQ at ages 18-20 (males, N = 554,644), we examined the hazard ratio (HR) for AUD ascertained from public registries...
March 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28303776/familial-and-special-twin-influences-on-cigarette-use-initiation
#20
Cristina B Bares, Hermine H Maes, Kenneth S Kendler
BACKGROUND: Shared experiences within families play an important role in the initiation of cigarette use among adolescents. Behavioral genetic studies using various samples have implicated that the shared environment that twins experience is an important source of influence on whether adolescents initiate cigarette use. Whether the special twin environment, in addition to the shared environment, contributes significantly to making twin siblings more similar in cigarette initiation, and whether the influence of the special twin environment persists into adulthood, is less clear...
April 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
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